Henry County is the second from the Mississippi River on the east and the second county north of the Missouri state line on the south, thus placing it in the southeast part of the state of Iowa.
Proceedings of the Iowa Academy of Science
©1904 Iowa Academy of Science, Inc.
Lindly, J. M.
"Flowering Plants of Henry County,"
Proceedings of the Iowa Academy of Science, 12(1), 157-164.
Available at: https://scholarworks.uni.edu/pias/vol12/iss1/26